42240043240 has 32 divisors (see below), whose sum is σ = 98105909760. Its totient is φ = 16350984000.

The previous prime is 42240043231. The next prime is 42240043243. The reversal of 42240043240 is 4234004224.

It is not an unprimeable number, because it can be changed into a prime (42240043243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17031036 + ... + 17033515.

It is an arithmetic number, because the mean of its divisors is an integer number (3065809680).

Almost surely, 2^42240043240 is an apocalyptic number.

42240043240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42240043240 is an abundant number, since it is smaller than the sum of its proper divisors (55865866520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42240043240 is a wasteful number, since it uses less digits than its factorization.

42240043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34064593 (or 34064589 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 42240043240 its reverse (4234004224), we get a palindrome (46474047464).

The spelling of 42240043240 in words is "forty-two billion, two hundred forty million, forty-three thousand, two hundred forty".